Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a single pair of chelae (claws). Crabs are found in all of the world’s oceans, while many crabs live in fresh water and on land, particularly in tropical regions.nSpecifications:nnThe photo shown is an example of what your specimen will approximately look like. Each crab is unique and will vary slightly in size, shape, color, etc.nnMedium 2.9×1.6×1 innLarge 4.3×1.7×1.1 in